Projecting machine



Nov. 2 1926. v

O. P. R. LEHMANN PROJECTING gaAoHINE Filed May 1&1, 1924 5 sheets-sheet1 l INVENTOR OTTO /R LEI/17H10! BY n m .m ginevra Nov. 2 1926.

Vi /ff v 1,605,245 o. P. R. LEHMANN PROJECTING MACHINE Filed May 14,1924 5 Sheelzs'Sheei. 2

Nov. 2 1926.

l Q. P. R. LEHMANN PROJECTING MACHINE Filed May 14, 1924 5SheelzS--Sheet 5 ATroRNEYs Nav. 2 1926. 1,605,245

O. P. R. LEHMANN v'PR0JE(J'IING MACHINE Fied May 14, 1924 5Sheets-Sheea'c- 4 IIIIIIIIII "pl-1J Nav. 2 1926.

O. P. R. LEHMANN PROJECTING MACHINE Filed May 14, 1924 f 5 Sheets-Sheet5 INVENTOR OTTO P. R. LEHMHNN ATTORNEYS H lllHlllHlmmHm....

Patented Nov. 2, 1926.

lilhllflEfD STATES PATE-NT oFFica.

OTTO P. R. LEHMANN, OF NE''ARK,` NEW JERSEY, ASSGNORO VICTOR C. THOBNE,OF

i NEW YORK, N. Y.

PROJECTING MACHINE. y

Application ledqMay 14,

This invention relates to projection machines and has' for its`principal object' to provide a new and improved machine of the type setforth `having means to support a plurality of slides Y, providedWithphotographic views' or advertising matter, which slides will beautomatically and successively brought before the projection machine,Another object is to so construct the slide supporting means and themeans for moving the slides to and from the projection lenses that theentire supply of slides contained in the machine can be projectedrepeatedly and continuously Without necessitating` the re,- nioval orrearrangement thereof after `they have been placed. Within the slidemagazines, whereby the lmachine after having' been placed in operationis adapted to continue in operation Without requiring any specialattention. These and other objects such as compactness and sturdiness ofconstruction, and surety of operation Will beapparent, to those skilledin the art to which my invention appertainls, from the following moredetailed description and by reference tothe accompanying drawingswherein' an example of my invention is illustratedl Without delining itslimits.

Y In the drawings-f 1 is a central longitudinal vertical section takenon the line 1-1 ofFig. 2.

Fig. 2 is a vertical section on the line .2-*Q of Fig. l.

Fig. 3 is an enlarged vertical section, partly broken away on the line 33 ofv Fig.

4; is a horizontal section-,on the line -l-4i of Fig. 1.

. F ig. is a vertical sectional detail ony the line 5-5 of Fig. 3.

Fig. 6 is a vertical sectional `detail on the line 6 6 of Fig. 4L and1924'. serial No. 713,154.

parts of the apparatus will be described under the following headings:the framework, the projection apparatus, the slide carrying' ,magazineathe slide changing mechanism, the reel driving mechanism and the manualreelvclriving device.

The frmncworc.

The framework consists of a suitable base 10 to lwhich is secured a gearhousing 11 upon which the operating gears to be hereinafterderscribed`are mounted. Secured to the top of' thelgear housing 11, is a bracket1:2', `having a pair of laterally extending arms 13V at the upper endthereof. A pair of plates' V15, fWhich are secured one to each sideofthe gear housing, having their front portions 15a formed into asubstantially cir cular Vform to" provide a closure for the slide reelsto behereinafter described. The rear portions 15b of said plates areconnected by a Wall 1,6 tol which the cover 17 is hinged as at.17a theside vvalls17b of said cover and' the' side plates 15 forming the lampboX A; in Whifh the major portion of the projection apparatus isAmounted.

The Vproject/6m apparatus.

the cover 17. The light rays from the lamp 19 are reflected by thereflector 20 through al double convex lens 21 mounted in front ofthelamp'l 19', the light rays beingdire ted by ,said lens'Ql into thecollector tube 22, which isprovided With suitable optical system oflenses in accordancewiththe Well knoivn construction of' devices of thischara'cter. A short distancev from its inner end the collector tube 2Qis provided with a downwardly' extendingv flange, 23, which formsa meansfor securing the tube to the bracket 12.

'An electric motor 26, suitably secured to the' base 10, is mountedWithin the lamp boX and has secured upon one end of its armature shaft27 a fan 28 by means of- Which air is drawn into the apparatus throughan aperture 29 provided in the rear Wall or plate 18 and dispelledthrough the lamp house.

The slide carry/ag magazines.

The slide carrying magazines consist of a pair of reels BB mounted oneon each side of the machine and both of such reels are identical inconstruction a description of one will be sullicient. Each reel has acentral cup shaped cylindrical drum 30, the outer e d of which is closedby a Wall 3l and the inner end being open. A boss 32, which projectsinto the interior of the drum from the center of the Wall 31, isprovided with a central bore which is rotatably mounted upon a stubshaft 33, said shaft haring a reduced threaded end 34 engaged Within acorrespondingly threaded aperture provided in the lateral arm 13 of thebracket l2. il cup shaped cylindrical housing 35. haring its outerendrlosed by a Hat Wall 86, is suitably secured, as by the rivets 37, tothe wall 3l of the drum 30 so as to form with said drum a unitaryassembly; and the drum and housing are retained upon the stub shaft 32by means of the nut 38.

The inner end of the drum 80 is provided with a plurality of notches 89for a purpose to be presently described, and a plurality of channelshaped guides are secured about the outer periphery of the drum inparallelism with each other and with the longitudinal anis of sai ddrum. A plurality of channelled guides 4l similar to the guides 40 aresecured about the inner circumference of the housing 35, each of theguides 4l being arranged in parallelism with and aligned radially of thehousing With a co-operating guide 40. The central Web of each guide 40is cut out adjacent to its respective notch 39 so as to permit the lug427 projecting laterally from the frame of each slide S, to projectinwardly and radially towards the axis of each drum. Each lug 42 isslotted as at 48 to provide a means With which the slide changingmechanism is adapted to engage.

The .Slide changing meclfaotsm.

The end of the armature shaft 27 of the motor 26 opposite to the fancarrying end projects into a bore 44 provided in the gear housing` ll.and for convenience in assembling the parts, the shaft 2? is connectedby means of a coupling 45 With a Worm shaft 46 having` a collar orshoulder 47 thereon. [i Worm 48 is leyed to the Worm shaft 46 and a stoppin 49 screwed into the housing il has its inner end in contact with theend of said shaft, there y serving as a means to properly locate theWorm 48 with respect to the Worm Wheel 50 and also acting as a thrustbearing for the shaft 46.

The Worm Wheel 50 is secured to a transverse shaft 5l, rotatably mountedin the housing ll, and carrying' at right hand Leonesa end (Fig. 8) aWorm 52, which meshes with a vWorm Wheel 53, secured to a shaft 54extending parallel to the Worm and motor shafts and 27. A spur gear 55is suitably secured to the shaft 54 and inea with spur gear 57,rotatably mounted on a shaft'58, which is mounted in suital'ilc bearingsin the housing l1 and located just above and parallel with the Wormshaft 4G, ein intermittent ,gear 59 secured to the shaft is driven bythe gear 57, by mechanism to be hereinafter described, and meshes withand drives a second intermittent gear G() rarried by a shaft 6l mountedin the bracket l2 above shaft 58. A crank disc 62 mounted on said shaft6l adjacent to the gear 64), .is provided with a crank pin G8 which isconnected by means of a connecting rod 64 with a pin 85, extendinglaterally from the side of a slide 66, which slide is mounted in a.f-:uitable guide Way 67, (see Fig. T) extending longitudinally of thebracket l2 and the arms 13 thereof. rlhe slide ('36 jfn'ovided betweenits ends with a vertically extending slot (38 in which is rotatablymountedl` as by means of the pin 69, a pinion, T0, which pinion mesheswith a fixed rack 7l, secured 'to the bracket l2 Within the guide way(Si) and which also meshes with a movable rack T2. The movable rack T2is slidably mounted within a suitable guide Way 78 forme;1 between theinner end of the louer Wall of the collector tube 22 and a rectangularframe 74 secured to said tube. The inner faces ol the top and bottommembers of said frame also form with the top and bottom i faces of thetube, a pair of guide ways io, lli in which the slides S are moved toand frian the exposure positions and by which 'they are supportedduring` the projection of the views thereon, rl`he upper face of the 1rorable rack 72 has a pair of lugs TT. T8, jrev jecting upwardlytherefrom, which lugs are adapted to be engaged Within the slots i3formed in the lugs 42 of the slides til.

The inner face of the cylindrical wal! ol each of the reel housings 85is pr Y 'ded with gear teeth 8O with Which a gear 8l meshes, said gearbeing driven by a gear 82 secured to an intermittent gear 88, meshing`with a cooperating intermittent 84; the gears 8l, 82 and 83 and 84respectively. being rotatably mounted upon the vertically extendingshafts 85, 86 and 87 mounted in suitable bearings provided in the gearhousing ll. The intermittent gear 84 is secured to ay Wheel 88 providedWith 450 teeth7 which mesh with and are driven by the similarly inclinedteeth of a gear 89 which is mounted upon the shaft 58.

The manual reel drafting device.

As it is sometimes desirable to operate the il l) Ill) machine manuallyindependently of the motor drive I accomplish this purpose Yby themechanism shown in Figs. 1 and 6 of the drawing.y It will be rememberedthat the gear 57 is rotatably mounted upon the shaft 58 while theintermittent gear 59 is secured to said. shaft. The opposed faces of thegears 57 and 59 as clearly shown in Fig. 1 of the drawing are recessedand the hub of gear 59 is provided with a plurality of notches orratchet teeth 90 with which the end of a pawl 91 carried by the gear 57is adapted to be engaged; a spring 92 being provided to hold said pawl91 in engagement with the teeth 90. When the gear 57 is rotated in thedirection indicated by the arrow X in Fig. 3, and which directioncorresponds to the rotation of said gea-r by the motor 26, the pawl 91will engage the ratchet teeth 92 andv thereby rotate the gear 59. If,however, it is desired to operate the machine manually, the handle 95secured to the outer end of the shaft 58 is rotated inthe directionl ofthe arrow, but as the gear 57 -is not secured to the shaft the gear 59will be rotated and as the rotation of the shaft will be in a directionwhich permits the pawl 91 to slip, the rotation of shaft 58 and gear 59will not cause the gear. 57 to be rotated.

Operation.

The operation of the machine is as follows, the rotation of the motor 26being communicated by worm 48, worm wheel 50, shaft 51,

- worm wheel 53, shaft 54, spur gears 55, 57,

shaft 58 and intermittent gears 59 and 60 will cause the crank disc 62to be intermittently rotated, thus reciprocating the slide 66. Theextentof movement of the slide 66 is doubled by the arrangement of the fixedand movable racks 71, 72 and the pinion 70. The rotation of the shaft 58:and with it the gear 88 produced by the motor will also rotate each ofthe gear trains consisting of the gears 88, 84, 83, and 81 therebydriving the `housings 35 which contain the slides S. The intermittentgears 59 and 6G and 83 and 84 are so constructed and arranged that thehousings 35 will be in mo tion when the slide 66 is stationary and viceversa. Assuming that the parts are in the position shown in Fig. 2 andthat the slide 68 has justed started to move towards the right, it willbe seen that the engagement of the lugs 77, 78, carried by the movablerack, with the slots 43of the lugs 44 of the slide S shown within thetube 22 and the slide l in the left hand magazine, will cause s movedinto thel guide ways 75, 76. yWhen the slide 6G reaches its right handAlimit of 'heretofore described in this specilicatio movementl theintermittent gears 59, GO have reached their dwell spaces, therefore theslide the period the slide V65 is stationary, the

toothed portions intermittent gears 83, 84 for 'the right hand magazineare in mesh thus causing the right hand housing 35 and associated partsto berotated a portion of a revolution Vecpua'l to the space between twoadjacent sets ofguides 40, 41, thus moving the slide S out of engagementwith the lug '78v and bringing a. fresh slide into engagement with saidlug. Vhen this movement is completed the intermittentV gears 59, 60,have` again become active and the slide 66 is then moved to the left,causing the slide S to be returned to its magazine and withdrawingthefresh slide from the right hand magazine to be exhibited during theperiod the left hand magazine is rotating to re move the slide-S fromengagement with the lug 77 and to bring another slide into engagementtherewith. y

The slides S and the frames carrying them may be removed frome themachine kby taking out 'the lenses 21 and the rectangular frame 74,whereby access may be cbtained to the guideways 75 andV 75 and theslides removed from the machine. ylhe individual slides are brought tothe removable position by operating the manually controlled handle 95and slides may befed into the machine by the same means.

In some instances it is desirable te repeat a slide between eachsuccessive varying slide and for this purpose a special slide helder $1is provided for the machine, which is shown in Figs. 8, 9 and 10. Thisspecial slide holder is adapted to hold but a single slide of thesameconstruction as the slides 'Hai comprising a metal frame which carriesthe glass slide and on which is secured the lug 42.

The single slide holder is vattached toene` of the stub shafts 33 (asillustrated in Fig. 8) where it remains in a fixed and nonrotatabl-eposition and each time a slide is mechanism carries a succeeding slide`from the housing' 35 the slide changing mechanism withdraws the specialslide from the exhibiting stationand returns it into the special slideholder, which alternate voperation of exhibiting and removing thespecial slide is repeated between the exhibition of each. succeedingslideV from the housing 35. It is to be understood that when this specia-l single slide holder is applied to one of the llO " vention` l claim:

l. ln a machine of the character described, a framework, a grojectionapparatus mounted on said framework, an exposure position in the path ofsaid projecting apparatus, a pair of rotatable slide carrying` magazinesmounted on saitL framework, said magazines being arranged on oppositesides of the exposure position and to rot-ate about horizontal axeslocated in axial alignment,

intermittently actuated means to more a slide substantially horizontallyand parallel to said axes and alternately from each of said magazines tosaid exposure position and to return said slide to its respectivemagazine and means to intermittently rotate each of said magazines inalternation.

2. ln a machine of the character described, a framework, a projectionapparatus .mounted on said framework, an exposure position in the pathof said projecting apparatus, a pair of rotatable slide carryingmagazines mounted on said framework, said magazines being arranged onopposite sides of the exposure position and to rotate about horizontalaxes located in axial alignment, each of said magazines being providedwith plurality of parallel guide ways in which a plurality of slides areadapted to be inserted. intermittently actuated means to more a slidealternately, substantially parallel to said axes, from each of saidmagazines 'to said exposure position and to return said slide to itsrespective magazine and means to intermittently rotate each of saidmagazines in alternation.

3. ln a machine of the character described, a framework, a projectionapparatus mounted on said framework, an exposure position in the path ofsaid projecting apparatus, a pair of rotatable slide carrying magazinesmounted on said framework, said iiagazines being arranged on oppositesides of the exposure position and to rotate about horizontal axeslocated in axial alignment, each of said magazines being provided with aplurality of pairs of guide ways, the members of each pair beingarranged in parallel alignment with each other and in parallelism withthe remaining guide ways, intermittently actuated means to'move a slidealternately, substantially parallel to said axes, from each of saidmagazines to said exposure position and to return said slide to itsrespective magazine and means to intermittently rotate each of saidmagazines in alternation.

Ll. ln a machine of the character described, a framework, a projectionapparatus mounted on said framework, an exposure position in the path ofsaid projecting apparatus, a pair of rotatable slide carrying magazinesmounted on said framework, said magazines being arranged on oppositesides of the exposure position and to rotate about horizontal axeslocated in axial alignment, each of said magazines comprising a centralcylindrical drum, a cylindrical housing secured to said drum androtatable therewith, a plurality of guide ways secured to the outercircumference of said drum and a plus rality of guide ways secured tothe inner circumference of said housing, said outer and inner guide waysbeing arranged in eooperating parallel pairs, the members of each pairbeing in alignment radially of said housing, intermittently acuatedmeans to move a slide alternately, substantially parallel to i iid axes,from each of said inagazines to said exposure position and to returnsaid slide to its respective magazine and means to intermittently rotateeach of said magazines in alternation.

in a machine of the character described, a framework, a projectionapparatus mounted on said framework, an exposure position in the path ofSaid projecting apparatus, a pair of rotatable slide carryingmagazinesmounted on said framework, said magazines being arranged on oppositesides of the exposure position and to rotate about horizontal axeslocated in axial alignment, each of said magazines being provided withplurality of parallel guide ways in which a plurality of slides Aareadapted to be inserted, said projection apparatus being` provided with aguide way with which said irstnained guide ways are adapted to bebrought into parallel alignn'ient, slide engaging means carried by saidframework to engage a slide within said first named guide ways and moveit substantially parallel to said axes into said second named guide wayand means for driving said slide engaging means.

6. ln a machine of the character described, a framework, a projectionapparatus mounted on said framework, a pair of rotatable slides carryingmagazines mounted on said framework one on each side of said projectionapparatus, each of said magazines being provided with a plurality ofparallel guide ways in which a plurality of slides are adapted to beinserted, said projection apparatus being provided with a guide way withwhich said first named guide ways are adapted to be brought intoparallel alignment, slide engaging means carried by said framework toengage a slide within said first nainedguide ways and move it into saidsecond named guide way and means for driving said slide engaging means,including a fixed rack, a reciprocating rack, a reciprocating slidecarrying a rotatable pinion interposed between and meshing with saidfixed and reciprocating racks, and means to intermittently reciprocatesaid slide.

7. In a machine of the character described, a framework, a projectionapparatus mounted on said framework, a pair of rotatable slidescarrying` magazines mounted on said fran'iework one on each side of saidprojection apparatus, each of said magazines being provided with aplurality of parallel guide ways in which a plurality of slides areadapted to be inserted, said projection apparatus being provided with aguide way with which said first named guide ways are adapted to bebrought into parallel alignment, slide engaging means carried by said'framework to engage a slide within said first named guide ways and moveit into said second named guide way and means for driving said slideengaging means, including a fixed rack, a reciprocating rack` areciprocating slide carrying a rotatable pinion interposed between andmeshingwith said fixed and reciprocating racks, means to intermittentlyreciprocate said slide, and means to intermittently rotate saidmagazines in alternation.

8. In a machine of the character described, a framework, a projectionapparatus mounted on said framework, an exposure position in the path ofsaid projecting apparatus, a pair of rotatable slide carrying magazinesmounted on said framework, said magazines being arranged on oppositesides of the exposure position and to rotate about horizontal axeslocated in axial alignment, intermittently actuated means to move aslide alternately and substantially parallel to said axes, from each ofsaid magazines to said exposure position and to return said slide to itsrespective magazine and means to intermittently rotate each of saidmagazines in alternation, a motor and connections therefrom to each ofsaid intermittent means to cause said means to opera-te continuously andautomatically.

9. In a machine of the character described, a framework, a projectionapparatus mounted on said framework-an exposure position in the path ofsaid projecting apparatus,

a pair of rotatable slide carrying magazines mountedo-n said framework,said mag-I azines being arranged on opposite sides of the exposureposition and to rotate about horizontal axes located in axial alignment,

intermittently actuated means to move a slide alternately andsubstantially parallel to said ',axes, from each of said magazines tosaid exposure position and to return said slide to its respectivemagazine and means to intermittently rotate each of said magezines inalternation, a motor` and connections therefrom to each of saidintermittent means to cause said means to operate continuously andautomatically and means to operate said magazine manually, independentlyof the motor, said means comprising in part coacting gears, one of saidgears having connection with said handle and adapted ,to be rotatedthereby and during its manual rotation leaving said companion gearstationary, said companion. gear during` the automatic operation of themagazine rotating with said first mentioned gear.

l0. In a machine of the character described, a framework, a projectingapparatus mounted .on said framework, an exposure position in the pathof said projecting apparatus, a rotatable slide carrying magazineadapted to carry a plurality of slides mounted on a horizontal axis onsaid framework and adjacent to said exposure position, a motor, drivingmeans actuated by said motor to rotate said magazine, reciprocatingslide engaging means to move a slide, substantially parallel to the axisof said magazine, from said magazine to said exposure position, said.driving means and slide engaging means each being connected withfsaidmotor by a gear train including a pair of intermittent gears.

ll. In a machine of the character described, a framework, a projectionapparatus mounted on said framework, anf exposure position in the pathof said projectino' apparatus, a rotatable slide carrying a magazineadapted to contain a plurality of slides mounted on a horizontal axis onsaid framework and adjacent to said exposure position, a motor, drivingmeans actuated by said motor to rotate said magazine, reciprocatingslide engaging means to move a slide, substantially parallel to the axisof said magazine, from said magazine to said exposure position, and saiddriving means and slide engaging means each being connected with saidmotor by a gear train including a pair of intermittent gears, each ofsaid pair of intermittent gears being constructed and arranged to beoperative when the other pair is inoperative.

12. In a machine of the character described, a framework, a projectionapparav tus mounted on saidframework, a pair of rotatable slide carryingmagazines adapted to contain a plurality of slides mounted on saidframework one on each side of said projection apparatus, slide engagingmeans tomove the slides successively and in a1- ternation from each ofsaid magazines, a

llO

motor, and a pluralityv of gear trains one 'for each oit said magazinesand said slide eiigzigiinz,` means driven by said motor, each of saidgear trains including a pair of intermittent gears, said intermittentgears being constructed and arranged to hold both of said magazinesstationary during the movement of said slide engaging means and torotate alternately one of said magazines While holding the otherstationary when said slide engaging means is at rest.

13. In a projecting machine, in combina tion, a projecting apparatus, ahorizontallyv arranged exposure position in alignment with saidprojecting apparatus, rotatable magazines mounted at each side of saideX- posure position upon horizontal axes, a plurality of slides in eachof said magazines and adapted to be Withdrawn therefrom end- Wise, saidslides being independently supported in said magazines upon guide Ways,guide Ways in said exposure position, the guide Ways in the magazinesbeing adapted, successively and alternately in each magazine, to alignWith the guide Ways of said exposure position, slide transferringmechanism, reciprocating` in a plane parallel to the said axes, adaptedto remove a slide from one of said magazines to said exposure positionand to return a slide to the other magv azine.

In testimony Whereoil I have hereunto set my hand.

OTTOL P. R. LEHMANN.

